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Order LookupUL Class T Fuses
Available6 products
UL Class T fuses are very small fuses that require minimal installation space for protecting electrical feeders and branch circuits from overcurrent. These fuses have an interrupting rating (IR) of 200kA and are not interchangeable with any other UL fuse class. They are current-limiting to prevent electrical damage by disconnecting circuits before they're exposed to the full magnitude and duration of an overcurrent.
Amps
Fact-Acting UL Class T Fuses, Nonindicating
Fast-acting, nonindicating UL Class T fuses open within seconds of being exposed to overloads and short circuits. Also called fast-blow Class T fuses, they are highly sensitive to changes in current flow and don't tolerate temporary overload currents or power surges. They have no indicator for identifying a blown fuse, so they're sometimes used with an indicating fuse block or cover.
Equivalent Series: A3T, JJN, JLLN, TJN
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Equivalent Series: A6T, JJS, JLLS
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Very-Fast-Acting UL Class T Fuses, Nonindicating
Very-fast-acting nonindicating UL Class T fuses open circuits even more quickly than fast-acting fuses when exposed to overloads and short circuits. They're commonly used to protect solid-state electronics. These very-fast-blow fuses are highly sensitive to changes in current flow and don't tolerate temporary overload currents or power surges. They have no indicator for identifying a blown fuse, so they're sometimes used with an indicating fuse block or cover.
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